20821306

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{25579}}^1$

素因数の和:25629

約数の個数: 16

約数和(自身を含む): 34993440

約数和(自身を除く): 14172134

約数列:

[1, 2, 11, 22, 37, 74, 407, 814, 25579, 51158, 281369, 562738, 946423, 1892846, 10410653, 20821306]

約数ペア:

[(1, 20821306), (2, 10410653), (11, 1892846), (22, 946423), (37, 562738), (74, 281369), (407, 51158), (814, 25579)]